Added spellchecker support for different dictionaries/languages:

mozilla\editor\base\nsEditorShell.cpp
    mozilla\editor\idl\nsIEditorSpellCheck.idl
    mozilla\editor\txtsvc\public\nsISpellChecker.h

      - Added GetDictionaryList() and Get/SetCurrentDictionary() methods.

    mozilla\editor\ui\dialogs\content\EdDialogCommon.js

      - Added AppendValueAndDataToMenulist() function.

    mozilla\editor\ui\dialogs\content\EdSpellCheck.xul

      - We now import strres.js.

    mozilla\editor\ui\dialogs\content\EdSpellCheck.js

      - Added InitLanguageMenu().


git-svn-id: svn://10.0.0.236/trunk@68236 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/editor/ui/dialogs/content/EdDialogCommon.js

@@ -354,6 +354,35 @@ function AppendStringToMenulist(menulist, string)
   return null;
 }
 
+function AppendValueAndDataToMenulist(menulist, valueStr, dataStr)
+{
+  if (menulist)
+  {
+    var menupopup = menulist.firstChild;
+    // May not have any popup yet -- so create one
+    if (!menupopup)
+    {
+      menupopup = document.createElement("menupopup");
+      if (menupopup)
+        menulist.appendChild(menupopup);
+      else
+      {
+        dump("Failed to create menupoup\n");
+        return null;
+      }
+    }
+    menuItem = document.createElement("menuitem");
+    if (menuItem)
+    {
+      menuItem.setAttribute("value", valueStr);
+      menuItem.setAttribute("data", dataStr);
+      menupopup.appendChild(menuItem);
+      return menuItem;
+    }
+  }
+  return null;
+}
+
 function ClearMenulist(menulist)
 {
   // There is usually not more than 1 menupopup under a menulist,